Add in a short -A option alternative for recent --age filter rule.

This is an interesting feature for all the reasons that process age itself might be, or --oldest or --newest and so on.

While processes can live & die, pd -sab $(pf --age=-600_00) can show you what began lately that's still running. Alternately, you could filter for just very old processes you suspect should not exist (like older than a week or $((700*86400)) jiffies) that are also owned by some user or one of the many other filtering criteria, like a kid proc of some server process or so on.

Add new --limit time out feature to procs find --action={wait|Wait}.

Also update minimum version of Nim/cligen & add markAndSweep to a build nim.cfg.

This should be it for a while, update-wise.

Oops. Sorry for the noise!

BareExcept & ByteAddress and even Hint[LineTooLong] should no longer fire. Plus a few documentation things.

Also, add nimPreviewSlimSystem compatibility. See RELEASE-NOTES.md or git log for more details.

Basically:

• Add -i flag to procs find to force pattern insensitivity { just by prefixing each pattern with "(?i)" as per lib/impure/nre.nim documentation. Seems to work fine. }
• Make pw less chatty (only ^C not default Nim message), but still exit 130 in case there is some pw patterns && shell construct.
• For >=100% just show integer percentage; 3 significant figures is plenty.
• Ensure data is flushed to stdout before sleeping in differential mode.
• Do not total syscall IO & blockdev IO for %<,%> (too often doubles IO).
• Various updates to sample config and compile-time warning/error fixes.
• Also added release notes for version 0.3.0.

Also shorten the name of the wait channel symbol on x86_64 and do a few other clean-ups.

This works pretty well for me. I've been using it daily for almost a year.